Door-lock.



J. T. 'BRAGKIN, Jn. DooR LOOK.

APPLIoATxoN FILED JUNE 27. 1912. I i 1,086, 1 36. Patented Fen-3, 1914.

' 4 SHEETS-*m1112232 ell-531' -I- f 224502,31'

[Illini]I il| zo a "fl HUI! if, I ff Il' I' /2- M1, I 'riff "/f/ 'IMM' WMU-1| 'Il l 7S*- J3 J. T. BRAGKIN, JR. DOOR LodK.

APPLICATION FILED JUNE 27, 1912.

seeegse;

Patented Feb. 3, 1914.

l JT; Emezm@ J. T. BRACKINyJR.

DOOR LOCK.

APPLIOATION FILED JUNE 27. 1912.

4 SHEETS-SHEET 3.

Q22 "his 4 5 whe/Mofa @9M-aangaf 9 /05 5r Patented Feb.3,1914.

J. T. :BRACKIM JR. DOOR LOCK.

PrLIoATIoN FILED JUNE 27, 1912.

L, l 36. Patented Feb. s, 19m.

4 SHEETS-SHEET 4:.

JAMES T. BRACKIN,-JIR., F TRENTQN,

'noon-noon.

Specvieaion of Letters latent.

pplicaton filed Enne 2?, 1,9m. Serial No. 205.23n

rl`his invention relates to improvements in i iloor locks.

The principal object of the invenion is lo proifi'fie nv lock of the multiple key iype in whirl) ilie fiend-lock lziehnniy be. readily shifiefl to its operative position and looked or retracted ns the ense inziy be, incl which, when in he, 'former position, will be prevenfed from being reirzicted by anyone noi knowing' the proper combination. l

noher object of the invention is to pro- \'i le :i loek oi*1 the 'el'nirnrier ilesi'riheil in whivh the spindle fornis part of the eoinliinnliou. mul whirh is adopted nniler certain ronilil ions o engage the dead-latch :incl shift ihr .senno lo its operiiiii'e position.

furiher olijeoi of the iiLeniiou is lo prinole n lool; in wl irlin novel inorlmnisin is :irrnngril .1.o reziin the locking piiivls :inil

the linnlihrs outv of engagement with the iii-:ul-lzin'h.when ihr .hitler is in its relruci'eil or inoprrzi'iro posii-ion.

lill furiher object of the invention is lo prin-ille n loi-k oi ihr rhnrnffer ilesirihed .xhilh is proi'iileil .Yiih :i nigh-luivh of novel consti inion :ulnpleil to reinii the. lntrh holt in iis opeiriiii'e posilion.

`slill further ohioe'l of i'he invention is lo proi'iilv :i look of ihr f hnrzu'ter ilesi'riliiil whii'h r'oinposoil of n rehi'tii'ely 'few nuluoer oi paris` is therefore rouipzirziiively siniphx in consliiuclion, :nul is ('lionp lo nninufzie iure.

.Vilh i'heso final' other ohjerls in view. the inwni'ii'in eonsinls in the eonslrurlion :nul novel ronilunziiion of parts hereinzi'l'ler'fnlly ihsrrihi-ih illustrziiml in the :irionipnnyingr ilrainfingrs iiiul poinloil ont iny the rlziinis heroio :ippenilofl: il' heilig"understood than. `\':i rions rhnn'gesin l'ho forni, proporlion, size zinil ininor ilelnils of conslruriion wiilhin the A.si-ope of ilie elniius nniiY he rosorleii to willi of a lockQonstruetedfA in accordance wih niy invention, lihiiel-nhii'e being removed to better disclose' the 3nuits,- sziicl -pn'rs heilig shown in their :operiitire or looked pois' ions2 Fig. :2 is ii fletiiil plan View sh'oiiingl'he irs-L step employed infretrzictingitlie ilriilLhitCh, F 1g. 3 is a siinila'r'ii'eiij but" showing inelsecond sen employed-:in retriieligig the ileocllatch, Fig. 4 is e. longitudinal sectional' View taken on thel line lr-i of Fig. 1,'Fig, 5 is :i secionzi-l View taken at right angles to Fig. 4, 'on a line slightly to i'he left of the spin'- dl'e. G is a deiail phin AView showing the third sep einployedinretrneting the i lend-hitch, :i View similar-to 1li-ig, 'l init) showing the latch bolt-in ills nornnil or unlocked position, Fig. 8 n similar 'View rgfinin n, 1

lint showing theirst step employedin projeolingfhe (lenihlliiohi"Fig: is i dehiil plain view showing the second'v step employed in projecting the deziihlnteli. Fig. l() is a trainsverse, sectional View showing the thiril step employed iirprojerl'inf: the deuil-hitch, Fig. 1] is :i persperiii'o View of the pivoieil slide?.A Fig. l2 is :i perspective riewofihe gravity hilf-h, Fig. 12 'n persperi'ire" of' tho keys employedin ro'njunotion with, theloeli. :ind Fig. llis n -ilei';iil siileeievntiono'f he spindle. lock. i

liilio reference nii'inernls (losig'nnie'roi-responding pars in :ill the figures of ln ilriiiiu ings.' i Referring to the drawings. the invention (connu-isos ai lork raising". which is (lesisrnnteil gis :i whole by the reference lettenA, :nul this ensingineludes ri from plii-e, :i rear plate. top r:incl -botioi'n viinlllsfG find 'T re sperlively :nuly lsider iviills :inkl 9g re? sperlively. Slidzillily inoiinloilf within :in 'opening 10 'oriiiedin the side.A wnllQSin o denilliilrh l. :indv Sliiizibly inonnied ii'iihin :in openinglr ll arranged in spzieeil relation kto :inil iiboife the opening' l0 is n liiirh'holt (l.

'lhe ileziilliitch B is formed in its upper eilgrev with spliced front .infl reornoiches :nul 12%. zinil in 'ihe renr end of the lower eilge with :i noti-h' l/h 'llhe reni' end of lhe fienillnteh terminates in :i renti-:illiyilisposril fin toil if which extendsupwardly lon lil the lzieh holt C, und Ihas asv-reep fli formell in its' inner edge.: ,-'\lsoi"orineil -inhe l'nii .3 nhoyo lhe sweep 16 is zi slot li' whirh is n C; posed in parallel relation to ille. fflfriii'l-laiizuli unil receives n hearing: pin i8 whieli is can rieil by the lfront: plaie l of the casino' A. Carried by the front opper portion oi' the lll) tail l is a depending pin 19, the inner end thereof being disposed in spaced relation to the baci; vvall 5 of the casing.

rl`he latch bolt C includes the usual shank yoke carrying a transverse vertical plate 28. In order t0 yieldably hold the latchbolt in its projected position, there is provided a coil spring 24 which is disposed between and connected to the yoke 22 and the side Wall 9 of the casing. 'Extending downwardly from the shank 2O of the latch bolt is a lug 25 having a front cani face 2G, and projecting upwardly from said shank is a lug 27 having a front cani face QS, the last mentioned lng being disposed in spaced relation to the top wall G of the casing.

In order to either project thev dead-latch B forwardly to its locking position, or to actuate the latch bolt B, the following mechanism is employed: Formed in the front and back plates 4 and 5 are alined openings 29 and 30 respectively, Which'register Within the yoke QQ ofthe latch bolt C, and slidable inv said openings is a. spindle. 3l, 0n the outer ends of this spindle are fixed knobs and 3i-l resj'iectively. Centrally fixed on the spindle is a sleeve 34 which is rotatably mounted within the openings Q9 and 30, and which is of a length somewhat greater than the distance between the front and back plates 4 and 5. Disposed around the inner end of' the spindle 3l is a helical spring 3.5, the smaller end thereof bearing against the knob and the larger end bearing against the front plate 4 and having its't'erxninal xedly connected thereto, said larger end embracing the front end of the sleeve 34. Formed in the sleeve 34 is a transverse slot 3G, which will be disposed in advance of the front plate 4 when the spindle is in its normal position, as is clearly shown in Figs. 4 and 14 of the drawings. In order to lock the spindle Sljagainst both axial and longitudinal n'ioveinents, a latch lever 37 is tulcrui'ned intermediate its ends, as at f38,`upon the front plate 4. One end of this lever is formed with an arcuate recess B9 adapted to fit within. the transverse groove 3G above mentioned. and thereby lock the spindle against movement. The other end of the lever terminates in a lingenpiece 40, and formed in the outer end of the lever is a depression 41 forming a consequent seat which is adapted to frictionally engage a corrosponding projection 'formed on the front plate 4. lt will thus be observed that by means of this projection and'seat 4l, the lever is held in locking engagement'. with the sleeve.

Fided on the sleeve 34 and in advance of the yoke 22 is a cam 42, which is formed with a fiat fare 43. a base 44 and a'n apex 45. In the normal or projected position of the latch 225 bolt C, the `flat face 43 of the cam is disposed 20, head :2l and yoke 22, the rear end of the l against the plate 23 of clearly shown in Figs. 'l ings. Carried by the spindle 8l is a laterally ein tending striker arm 46 1which is normally disposed in rear of and below the r epending pin i9 which is carried by the tail l5. o'iE the dead-latch B. l Then itis desired Ato project the dead-latch through the medium ci" the spindle, said spindle is first shifted longitudinally against the tension of .the spring so as to dispose the striker arin Ll-l i behind the pin 19 and in the saine plane therewith, whereby upon rotation oi said spindle in right handed direction, said striker arin xvill engage the pin and thereby transmit a longitudinal movement. to the dead-latch, as will be readily mnlerstood. In order to assist the forward or j 'irojecting movement of the dead latch, a coil spring fl'? is connected at one end to the bottom wall 'T of the casing, and at its other end to the latch bolt B. This spring is normally disposed at an inclination so that as the dead-latch is drawn forwardly, said spring will be first compressed and later as soon as the upper end passes the center line the spring will expand and cause the dead-latch to-move to its fartherrnost or projected posi-- .t-ion.

ln order toY lock the latch bolt against retract-ion., the top Wall 6 intermediate the lug 27 and thel opening l1 is formed with a longitudinal opening 48. Slidably mounted within this opening is a cani projection 48 which depends -from a finger-piece 4f). A

the yoke "22, as and T of the draivtop wall, and has its free end extending downwardly'for engagement with the projection 48". Carried by this spring is a depending stop 5l, which is adapted when the latch boltC is retracted to be positioned in advance of the cani `face 28 ol" the ing Q7. In order to position the stop 51 as above described. the linger-piece 49 is shifted longi- `tlnlinally along'the casing, and as a result, the projecticni 4&1. is carried thereby and this projection engages the depexnling7 end of the spring 50, causing said spring to be 51 in advance of the cam face 2S as above explained.

A pair of locking tuniblers SQ-SQ which are identical in construction, are disposed on opposite sides ot the tail l5 of the deadlatch B, and are swingingly mom'ited at their rear ends upon the bearing pin 18. llach tumbler includes a forwardly extending body portion 53 whicliaerniinates at its iorward end in a don-'nwardlj-,f projecting l the nger being adapted to engage Within a recess 56 formed in the rear end oit the l upper face of the dead-latch B, and thereby l lock said latch 'against retraction, as is liat spring is secured at one end to saidv depressed, and as a. result, position the stop finger 54 and a forwardly extending hook Lonate@ clearly shown in Fig. l of the drawings. In'

` which, when the tumbler is in the position as shown in' Fig. 1, is disposed across the sweep 16 of the dead-latch B. Centrally secured to the front face 4 is a post 60, which is formed with a threaded opening 6l for receiving a Screw (not shown), said screw being employed for secu-ring the front and' back plates/ and 5 together. A flat spring 62 has its rear end Xedly secured toftbe body portions 53 of the tumblers 52, and the'l, forward or free end of this spring bears against the post and tends to -yieldably urge said tumblers downward for engagement with the dead-latch B.

Secured to the front plate 4 of the easing intermediate the dead-latch B and lateh bolt (l and slightly in advance of the lng; 25, is a pivot pin 63. Also secured to the front. plate 4: intermediate the pin 63 andthe tumblers is a -pivot pin 64, and formed in said plate intermediate the pins (33 and 6% is a. key-hole 65. A gravity paujl 66 is fulcrumed adjacent one end upon the pin 63, and this paul normally rests upon the upper edge of.the dead-latch B, and is adapted to engageV within the notch 12 thereof when said latch is disposed in its projected position, as is clearly shown in Fig. l of the drawings. In order to centrally support the pawl 66 between the front and back plates 4 and 5, there is provided a swinging weight 67 which is pivotally mounted upon the pin G53, and which is longitudinally slotted to receive said pawl. The upper end otthis pawl terminates beyond the pin G3 in af atch o8. A seconder-:witty payvl. (Si) is fulernmed intermediate its ends upon the pin "54, and. a swingingl weight 70, similar in construction to the weight G7. is also swingingly mounted upon the pin 64 for engagement with the pa-wl (if). The upper end ot' this paul terminates above the pin (34 in a catch 71. 'lhe pau'l ttf) is adapted when the dead-lateh li is disposed in its projected position to engage u'ithin the recess 13, as is elearly shown in Fig'. l ot' the drawings.

ln order to lock the pawls Utl and (it) ont olf engagement with the .le:ul-lat,eh l, the front plate 4t Carries a bearing pin 72. and Vl'ulernmed upon this pin is a gravity laten 7f3. :saiilpin being disposed intermediate the pan'l (tt) and the tumbler 52. 'l`he 'ree end of the latch jformed with a depending hook T4 and with an upwardly priiieeting head 75. Centrally formed on thelmver iai-e oi the lateh is a second hook T6, the

depth ol' this hook being somewhat greaterthan the depth of the hook (4- for af reason which will hereinafter appear. Depending from the pivot end or" the latch is a spaced pair of ears 77-77, and fulcrumed upon la transverse pin .78 which connects ears is a `vertically swinging trip T2?. the front end of said trip/being formed with an np- Wardly extending stop 80, and the rear end of said trip being formed with a cani face 81. It willV thus be'ohserved that thie tripjs normally held in ahorizontai position, with the stop 8O abutting the latch i3? and also that the cam face 81 disposed in the path of movement of the. projections of the tumblers 52. i

Formed in the front plate below the tail. l5 of the dead latch E is a keyhole Se cured Ato said Jf'ront plate et between the key hole/82 and the side -wall 9 is a bearing pin S3. A pivoted slide is designated a Whole by the reference numeral Si, and this slide includes ahead 85 a. tail 8G. Extending forwardly from the tail 86 are longitudinal guide pins 87-9-87, the forward ends thereof projecting in suitable openings (not shown) formed in the portion ot' the head 85. Coil springs 88 are disposed around the respective pins 87 intermediate the head and tail and serve to yieldably retain said. head and tail in spaced relation. The forward end or" the head 85 recessed. as at 89, to form a seat, said seat being,r divided by a. transverse Aweb 90. When the head 85 is in itsnormal position. the. 'web 90 projects slightly' into the. key-hole slot 82. The tail 8G is formed with a longitudinal slot Si, which reeeives the bearing pin 8f3 and thereby permits ot a sliding` as well as pivotalmovement ot said slide. 'lhe rear end ot' the tail 86 terminates in a rear- Yardly and upwardly vineliiied tiener ft2.

Fulernmed upon the. pin it?) earricd by the lfront plate 4 and disposed between the tail RG and the wall 9. is a spring latch 'sl-t. one

end 95 thereof being vieldahlv held in en jugement with the tinger ft2 by means of a eoil spring tlt. The otheinend of this lateh is formed with' a hoolt iti".

(lai'ried by the l'ront plate. in rear-otl the key-hole .Q2 and slightly below the same is a bearing" pin tlg, and {nh-ruined intermediate its ends upon this pin u lor-king' lever tlf), the forward portion thereof beingl formed \vitl an upwardly extending` eaux projia'ct'ion lo() whieh is disposed slightly in advahee ot' the keV-hole o ienin'r H2. 'lhe toi-ward endV ot' this lever terminates in an upwardlyY extending linger lOl u'hielr adapted to en gage within a recess 102 formed in the rear portion of the lower tace ot the dead--latrh `l" when said latch is in its protected posi tion. in an upwardly extending catch i023 'tl-hiel, adapted to 'be engaged by the hooi; 0T. as

will hereinafter more full* a i .ear. I ln order to centrally secure the lever 99 interme The rear end oi" this lever terminatesl i thus raised, the hooks thereof will be caused to engage against the cam tace S1 of .the gravity trip 79 and swing said trip upwardly upon its pivots 78,' said tuinblers being moved upwardly against the tension of the flat .fpring 62. As soon as the projections of the tumblers are disposed above the trip 79, said trip Will'by gravity return to its normal position. As soon as the ward 115 of the key lil-leaves the tumblers, said tumblers will be held above the dead-latch B by means of the project-ions 5:3 engaging the trip 79. VThus 1t will be 'observed that thelingers :Ell of said tumblers are held out of engagement 'with the recess 50 of said dead-latch. As the key E is further rotated in the same direction, the Ward 115 will engage the sweep 16 of said .dead-latch and lretract said-latch, as will be readily understood.'

ln orderto 'automatically return the locking lever 99 to its normal position lagainst the dead-latch B so'that the finger 101 thereof will engage 'within the recess 102 when said Ylatch is projected, the spindle 31 is rotated toward the right, and as a result,

the point 45 of the cam. 42 will bear against' the plate 23 and cause vthe latch bolt C to be retracted against the tension of the spring Q4. As the latch bolt thus moves, the spring L08 is compressed, and'this spring which is trained around the roller 109 tends to hold the post 107 vand'consequently the pivoted slide S11- in fixed position, asv is clearly shown in Fig. 6 of the drawings. The key is then further rotated, and as a result, the ivard 115 `will engage the head S5 of the slide Se and cause said slide to swing` upon its pivot pin 83, as shown by the dotted lines in Fig. G of the drawings. This movement of the slide 8l withdraws theA finger 92 from l the' end 975l of the spring latch 94. The

spring 96 then draws the hook 97 of said latch out'fro-m engagement with the catch 103 of the locking lever 99. As a result, the spring 105 which bears against the forward end of said locking lever 99 causes the lever to swing upon its pivot 98 so that the finger 101 will bear against the dead latch B. As

soon as thc ward 115 of the key E is turned to register with the key holei82, the pivoted slide will return to its norn l or hori zontal position by means of the spring 108.

The spindle 31 is then rotated to its normal,

position and the parts of the lock will be in the positions as shown in Fig. 7 of the drawings. The spindle 3l is than vrotated in the opposite direction, this movement causing the base 44 to bear against the plate 23 and retract the latch holt C. AS a result, the

i cam lufr .25 will he disenffalr'ed from the head l1 D D 75 of the gravity latch 73, and as a result. the spring 62 Will through the medium of the tumbler 52 and trip 79, Swing the gravity latch upwardly so as .to disengage the parvis and 69, thereby permitting said pawls to drop upon the dead latch ll, clearly slii'nvn in Fig. 8 of the drawings.

ll'hat is claimed is:

l. A door lock comprising in ccmbination,

a dead latch, a spindle. and means carried by the spindle normally disposed out of engagement With the dead latch'adapted in one position of said spindle to project the said latch upon rotation or' the spindle in one direction.

'2, A. door lock comprisingin combination,

a dead latch, f1 spindle and means carried by the spindle normally disposed out of en gagement with the dead latch and adapted in one position of said spindle to engage di rectly with said latch to project the latter upon rotation of the spindle in one direction.

3. A door lock comprising' in combination, a dead latch, a pin extending laterally therefrom, said pin being rigid with the latch, a spindle and a striker arm extended laterallyfroin the spindle, said arm being extended through the spindle and disposed normally out of engagement with the pin and. adapted in one position of said spindle to engage with said pin to pro-ject the latch upon a partial rotation of the spindle in one jsame against movement, and-an element ncrmally engaging the gravity latch to lock the sameagainst movement.

0. A door lock including in combination, a dead latch having a recess formed therein, a keyv actuated gravity pawl adapted for engagement within the recess when. the latch is in its projected position, a gravity latch engageable With the pawl for retai the same against movement, an elem normally engaging the gravity latch te or the same against movement, and mean; tor

withdrawing the element from engagement with said gravity latch.

7. A door lock including in combination, a dead latch havinga recess formed therein, a key actuated gravity paWl adapted for engagement within thejrecess when the latch is in its projected position, a gravity latch engageable-With the pawl for retaining the same against movement, a latch lcolt having lll) 

